Branch of Quality Systems


Most Current Time Series Charts for NWQL LS 5433

The Time Series Charts
The charts provide OBSP recovery information for every analyte at different concentrations for every method OBSP assesses. The charts exhibit a Locally Weighted Scatterplot Smoothing (LOWESS) line. This line is used to help observe patterns and trends of the data over time. The time series charts also show bias and variability of the OSBP data. The most current time series charts in the table below will be overwritten periodically and will contain data that is currently being reviewed. All data is provisional and may change if the OBSP deems necessary.

There are two tables provided at the bottom of every time series chart that show statistical summaries.

Plotted Points Statistics Table
Description of the OBSP QA recoveries grouped by concentration level. The statistics in the table: mean, median, standard deviation and F-pseudosigma define bias and variability of the OBSP recoveries.

Sample Statistics Table
Counts (N) - The quantity of the variety of items.
Plotted - This number equals the total number in the above table.
Estimated Values - There are a number of reasons the laboratory will estimate (E) a result. If there are 100% of the results estimated the analyte is identified as a permanently estimated compound (analyte name in time series chart will be red).
Deleted Values - The laboratory may delete an entire sample or a single analyte for a number of reasons.
Spiked, Censored - A term for those samples that were spiked and correctly reported as less than a reporting level (possibly a raised reporting level) - the expected concentration was at a lower concentration than the censored result provided by the laboratory.
Spiked - The number of times the OBSP has submitted this analyte to the NWQL.
False Negative - The number of times the laboratory reports this analyte as not present in the sample when it is there.
Not Spiked - The number of times the OBSP has submitted a sample to the appropriate method, without this analyte.
False Positive - The number of times the laboratory reports this analyte as present when it is not in the sample.

The charts and data that you might secure from this U.S. Geological Survey (USGS) web page (identified as "OBSP") have not received official USGS approval and as such are provisional and subject to revision. The charts and data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use.

Lab Schedule 5433 - Waste Indicators , Solids, Pres Solv Extr - SPE, by GC-MS
Choose an analyte below or click here for all analytes sorted by NWQL parameter code Parameter CAS#
1,4-Dichlorobenzene 63163GCM13 106-46-7
1-Methylnaphthalene 63165S0212 90-12-0
2,2',4,4'-Tetrabromodiphenyl ether 6316600037 5436-43-1
2,6-Dimethylnaphthalene 63167S0213 581-42-0
2-Methylnaphthalne 63168S0214 91-57-6
3-beta-Coprostanol 63170S0216 360-68-9
3-Methyl-1(H)-indole (Skatole) 63171S0217 83-34-1
3-tert-Butlly-4-hydroxy anisole (BHA) 63172S0218 25013-16-5
4-Cumylphenol 63173S0219 599-64-4
4-n-Octylphenol 63174S0220 1806-26-4
4-Nonylphenol 63175S0221 104-40-5
4-Nonylphenol diethoxylates 63200S0244 not assigned
4-Octylphenol diethoxylates 63201S0245 not assigned
4-Octylphenol monoethoxylates 63206S0250 not assigned
4-tert-Octylphenol 63176S0222 140-66-9
Acetophenone 63178S0224 98-86-2
Acetyl hexamethyl tetrahydronaphthalene (AHTN) 63179S0225 21145-77-7
Anthracene 63180S0226 120-12-7
Anthraquinone 63181GCM13 84-65-1
Atrazine 63182S0227 1912-24-9
Benzo[a]pyrene 63183S0228 50-32-8
Benzophenone 63184S0229 119-61-9
beta-Sitosterol 63185S0230 83-46-5
beta-Stigmastanol 63186S0231 19466-47-8
bis(2-ethylhexyl)phthalate 63187S0232 117-81-7
Bisphenol A 63188S0233 80-05-7
Bromacil 63189S0234 314-40-9
Camphor 63192S0237 76-22-2
Carbazole 63194S0239 86-74-8
Chlorpyrifos 63195S0240 2921-88-2
Cholesterol 63196S0241 57-88-5
Diazinon 63198S0242 333-41-5
Diethyl phthalate 63202S0246 84-66-2
d-Limonene 63203S0247 5989-27-5
Fluoranthene 63208S0252 206-44-0
Hexahydrohexamethylcyclopentabenzopyran (HHCB) 63209S0253 1222-05-5
Indole 63210S0254 120-72-9
Isoborneol 63211S0255 124-76-5
Isophorone 63212S0256 78-59-1
Isopropylbenzene 63213S0257 98-82-8
Isoquinoline 63214S0258 119-65-3
Menthol 63215S0259 89-78-1
Metolachlor 63218S0262 51218-45-2
N,N-diethyl-meta-tolumide (DEET) 63219S0263 134-62-3
Naphthalene 63220S0264 91-20-3
para-Nonylphenol (total) 63221S0265 84852-15-3
p-Cresol 63222S0266 106-44-5
Phenanthrene 63224S0268 85-01-8
Phenol 63225S0269 108-95-2
Prometon 63226S0270 1610-18-0
Pyrene 63227S0271 129-00-0
Tributyl phosphate 63231S0275 126-73-8
Triclosan 6323200021 3380-34-5
Triphenyl phosphate 63234S0277 115-86-6
Tris(2-butoxyethyl)phosphate 63229S0273 78-51-3
Tris(2-chloroethyl)phosphate 63230S0274 115-96-8
Tris(dichlorisopropyl)phosphate 63235S0278 13674-87-8

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